package com.bdqn.t350.util;

public class StringToUtil {
    /**
     * 截取文件名的后缀,包括点.
     * @param fileName
     * @return
     */
    public static String suff(String fileName){
        //sdfsadr435rsdkh.pdf
        return fileName.substring(fileName.indexOf("."),fileName.length());
    }
}
